Seating plan for a light plane

A light plane has seats in rows of 2. 

How many rows are needed for 14 (26, 38) passengers to go on the flight? How many different ways could the seating arrangement be. 

The rows can have more than 2 in them.

1:  Get        blocks and         counters.

2:  14, 26, 38

3:  What could the seating plan look like for these numbers- 60, 72, 90, 96.